.login-container {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  }
  
  .login-card {
    width: 400px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }
  
  .login-tip {
    text-align: center;
    color: #999;
    margin-top: 16px;
    font-size: 12px;
  }